• Country
• Germany

• Manufacturer / Brand
• Nora, Aron, Heliowatt; Berlin

• Year
• 1929–1931

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 8100

• Wave bands
• - without

• Loudspeaker
• Magnetic loudspeaker (reed) generic. / Ø 27 cm = 10.6 inch

• Material
• Bakelite case

• from Radiomuseum.org
• Model: Astra L21 - Nora, Aron, Heliowatt; Berlin

• Shape
• Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).

• Dimensions (WHD)
• 385 x 420 x 100 mm / 15.2 x 16.5 x 3.9 inch

• Notes

• Lautsprecher «Sonnenblume»
  Form L21 Nora-"Astra"

• Net weight (2.2 lb = 1 kg)
• 1.9 kg / 4 lb 3 oz (4.185 lb)

• Price in first year of sale
• 32.00 RM

• Source of data
• Radiokatalog Band 1, Ernst Erb

• Mentioned in
• Die Sendung (Nr. 35, 1929)

• Other Models

• Here you find 633 models, 556 with images and 342 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Nora, Aron, Heliowatt; Berlin